Prior to this commit, the
[ActionView::Helpers::UrlHelper#button_to][button_to] helper rendered
`<input type="submit">` elements when passed its contents as a String
argument, and rendered `<button type="submit">` elements when passed its
contents as a block.
This difference is subtle, and might lead to surprises.
Additionally, a `<form>` element's submitter can encode a `name`/`value`
pairing, which will be submitted as part of the request. When
`button_to` renders an `<input type="submit">` element, the "button"
content is rendered as a `[value]` attribute, which prevents any
meaningful data from being encoded.
Since it's a single `<button>` or `<input type="submit">` within a
`<form>`, missing out on that opportunity to encode information might
not be a show stopper, but ensuring that a `<button>` element is
rendered _without_ a default `[value]` attribute enables applications to
encode additional information that can be accessed JavaScript as
`element.value`, instead of a workaround like
`element.getAttribute("data-value")`.
Support rendering `input` elements with button_to
---
To support the original behavior of `button_to` rendering `<input
type="submit">` elements when invoked _without_ a block, expose the
`app.config.button_to_generates_button_tag` configuration flag.
By default, it's set to `true` and ensures that all `button_to` calls
render `<button>` elements. To revert to the original behavior, set it
to `false`.
[button_to]: https://api.rubyonrails.org/v6.0/classes/ActionView/Helpers/UrlHelper.html#method-i-button_to
Co-authored-by: Dusan Orlovic <duleorlovic@gmail.com>
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